in a hand-written note to her family, president obama vowed to work to end this senseless violence. the first lady also met with about 30 of hadiya's class mates and friends. david? >> alex perez, tonight, in chicago. alex, thank you. >>> tonight, we're learning that boeing has conducted a test flight of his troubled 787 dreamliner. it took off for seattle, circling back. the dreamliner has been grounded after so many reports of problems with the batteries. >>> oversees tonight, a court in egypt has ordered to block youtu youtube. given the dissension inside their new government, it's unclear that will be enforced. >>> beijing's dangerous pollution wasn't enough to darner the spirits. it's the year of snake which some believe isn't considered a positive sign. >>> still much more ahead on "world news" this saturday night. so many people loved her in that movie "bridesmaids." but many fans are taking a stand on something else. after a critic launched a fire storm over what he said about her. weigh in when we come back on this. [ stefan ] with a cold or flu, nighttime nasal congestion